Word: alloys
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...brazing alloy (with copper and zinc) to connect joints: it is workable at relatively low temperatures which do not injure the metals joined...
...certain: New Jersey Zinc's plants in its home State, Pennsylvania, and the West are all-out for war. Biggest wartime zinc need is for millions of shell cases, which the U.S. specifies must be 30% high-grade zinc, 70% copper. Then comes a string of zinc alloy castings for trucks and aircraft (fuel pumps, carburetors, door handles, etc.), die-cast gun sights, shell fuses and fire pumps, galvanized ship plates, sanitary equipment and plain tin roofs. Atop this are zinc oxide for paint, tires and medical supplies, "spiegeleisen" (mirror iron) for steel furnace purification, zinc dust for rust...
...high-minded, non-slicing WPBers it was just a routine order: no more sliced bread for the duration, a consequent yearly saving of 100 tons of slicing-machine alloy steel. But to U.S. housewives it was almost as bad as gas rationing-and a whale of a lot more trouble. They vainly searched for grandmother's serrated bread knife, routed sleepy husbands out of bed, held dawn conferences over bakery handouts which read like a golf lesson: "Keep your head down. Keep your eye on the loaf. And don't bear down." Then came grief, cussing, lopsided slices...
...silver-40% indium alloy has the same appearance as sterling but is more than three times as hard-a great advantage in the many industrial uses planned for silver...
...needs through the Council's cross index of Detroit tools and equipment, can get advice on simplifying its operations from the best brains in the business. No problem is too big, nor is even Army red tape always sacred: when tank production slowed from scarcity of the alloy steels specified, Ordnance accepted substitutes recommended by the automotive engineers, had so much confidence in their judgment that it skipped the usual delaying tests on Army proving grounds...